From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Wed, 16 Sep 2009 19:56:49 +0000 (+0200)
Subject: oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9a5963eb494c8a7be65199e15854551df7d2d939;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP

commit 85bac32c4a52c592b857f2c360cc5ec93a097d70
    ring-buffer: only enable ring_buffer_swap_cpu when needed
broke oprofile (at least on s390, but likely on all platforms).

this patch lets oprofile select RING_BUFER_ALLOW_SWAP to make
ring_buffer_swap_cpu usable for oprofile.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
LKML-Reference: <200909162156.49239.borntraeger@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Robert Richter <robert.richter@amd.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/arch/Kconfig b/arch/Kconfig
index beea3ccebb5e..7f418bbc261a 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -9,6 +9,7 @@ config OPROFILE
 	depends on TRACING_SUPPORT
 	select TRACING
 	select RING_BUFFER
+	select RING_BUFFER_ALLOW_SWAP
 	help
 	  OProfile is a profiling system capable of profiling the
 	  whole system, include the kernel, kernel modules, libraries,